SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G
                                  Rule 13d-102

                   Under the Securities Exchange Act of 1934
                               (Amendment No. 4)*

                              Carbo Ceramics Inc.
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                                (Name of Issuer)

                                     Common
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   140781105
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                                 (CUSIP Number)

                                   12/31/2005
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            (Date of Event which Requires Filing of this Statement)

      Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:
                               |X| Rule 13d-1 (b)
                               |_| Rule 13d-1 (c)
                               |_| Rule 13d-1 (d)

----------
      * The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.

      The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).

Page 1 of 7 Pages


CUSIP No. 140781105
--------------------------------------------------------------------------------
(1) Names and I.R.S. Identification Nos.(entities only) of reporting persons.

    Neuberger Berman Inc.
    061523639
--------------------------------------------------------------------------------
(2) Check the appropriate box if a member of a group (see instructions)   (a)|_|
                                                                          (b)|X|
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(3) SEC use only.

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(4) Citizenship or place of organization.

    Delaware
--------------------------------------------------------------------------------
Number of shares beneficially owned by each reporting person with:

    (5) Sole voting power:
        101553

    (6) Shared voting power:
        1776772

    (7) Sole dispositive power:
        0

    (8) Shared dispositive power:
        2740041

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(9) Aggregate amount beneficially owned by each reporting person.

    2740041
--------------------------------------------------------------------------------
(10) Check if the aggregate amount in Row (9) excludes certain shares       |X|
     (see instructions).
--------------------------------------------------------------------------------
(11) Percent of class represented by amount in Row 9.

     11.38%
--------------------------------------------------------------------------------
(12) Type of reporting person (see instructions).

     HC
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Page 2 of 7 Pages


CUSIP No. 140781105
--------------------------------------------------------------------------------
(1) Names and I.R.S. Identification Nos.(entities only) of reporting persons.

    Neuberger Berman, LLC
    135521910
--------------------------------------------------------------------------------
(2) Check the appropriate box if a member of a group (see instructions)   (a)|_|
                                                                          (b)|X|
--------------------------------------------------------------------------------
(3) SEC use only.

--------------------------------------------------------------------------------
(4) Citizenship or place of organization.

    Delaware
--------------------------------------------------------------------------------
Number of shares beneficially owned by each reporting person with:

    (5) Sole voting power:
        101553

    (6) Shared voting power:
        1776772

    (7) Sole dispositive power:
        0

    (8) Shared dispositive power:
        2740041

--------------------------------------------------------------------------------
(9) Aggregate amount beneficially owned by each reporting person.

    2740041
--------------------------------------------------------------------------------
(10) Check if the aggregate amount in Row (9) excludes certain shares       |X|
     (see instructions).
--------------------------------------------------------------------------------
(11) Percent of class represented by amount in Row 9.

     11.38%
--------------------------------------------------------------------------------
(12) Type of reporting person (see instructions).

     BD        IA
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Page 3 of 7 Pages


CUSIP No. 140781105
--------------------------------------------------------------------------------
(1) Names and I.R.S. Identification Nos.(entities only) of reporting persons.

    Neuberger Berman Management Inc.
    132667528
--------------------------------------------------------------------------------
(2) Check the appropriate box if a member of a group (see instructions)   (a)|_|
                                                                          (b)|X|
--------------------------------------------------------------------------------
(3) SEC use only.

--------------------------------------------------------------------------------
(4) Citizenship or place of organization.

    New York
--------------------------------------------------------------------------------
Number of shares beneficially owned by each reporting person with:

    (5) Sole voting power:
        0

    (6) Shared voting power:
        1776772

    (7) Sole dispositive power:
        0

    (8) Shared dispositive power:
        1776772

--------------------------------------------------------------------------------
(9) Aggregate amount beneficially owned by each reporting person.

    1776772
--------------------------------------------------------------------------------
(10) Check if the aggregate amount in Row (9) excludes certain shares       |_|
     (see instructions).
--------------------------------------------------------------------------------
(11) Percent of class represented by amount in Row 9.

     7.38%
--------------------------------------------------------------------------------
(12) Type of reporting person (see instructions).

     BD        IA
--------------------------------------------------------------------------------

Page 4 of 7 Pages


CUSIP No. 140781105
--------------------------------------------------------------------------------
(1) Names and I.R.S. Identification Nos.(entities only) of reporting persons.

    Neuberger Berman Equity Funds
    135521910
--------------------------------------------------------------------------------
(2) Check the appropriate box if a member of a group (see instructions)   (a)|_|
                                                                          (b)|X|
--------------------------------------------------------------------------------
(3) SEC use only.

--------------------------------------------------------------------------------
(4) Citizenship or place of organization.

    Delaware
--------------------------------------------------------------------------------
Number of shares beneficially owned by each reporting person with:

    (5) Sole voting power:
        0

    (6) Shared voting power:
        1573200

    (7) Sole dispositive power:
        0

    (8) Shared dispositive power:
        1573200

--------------------------------------------------------------------------------
(9) Aggregate amount beneficially owned by each reporting person.

    1573200
--------------------------------------------------------------------------------
(10) Check if the aggregate amount in Row (9) excludes certain shares       |_|
     (see instructions).
--------------------------------------------------------------------------------
(11) Percent of class represented by amount in Row 9.

     6.53%
--------------------------------------------------------------------------------
(12) Type of reporting person (see instructions).

     IV
--------------------------------------------------------------------------------

Page 5 of 7 Pages


Item 1(a). Name of Issuer:

           Carbo Ceramics Inc.

Item 1(b). Address of Issuer's Principal Executive Offices:

           6565 MacArthur Blvd. Suite 1050 Irving TX 75039

Item 2(a). Name of Person Filing:

           Neuberger Berman Inc.

Item 2(b). Address or Principal Business Office or, If None, Residence:

           605 Third Ave. New York NY 10158

Item 2(c). Citizenship:

           Delaware

Item 2(d). Title of Class of Securities:

           Common

Item 2(e). CUSIP No.:

           140781105

Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or
        (c), Check Whether the Person Filing is a:

        (a) |_| Broker or dealer registered under section 15 of the Act
                (15 U.S.C. 78o).

        (b) |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

        (c) |_| Insurance company as defined in section 3(a)(19) of the Act
                (15 U.S.C. 78c).

        (d) |_| Investment company registered under section 8 of the Investment
                Company Act of 1940 (15 U.S.C 80a-8).

        (e) |_| An investment adviser in accordance with
                ss. 240.13d-1(b)(1)(ii)(E);

        (f) |_| An employee benefit plan or endowment fund in accordance with
                ss.240.13d-1(b)(1)(ii)(F);

        (g) |_| A parent holding company or control person in accordance with
                ss.240.13d- 1(b)(1)(ii)(G);

        (h) |_| A savings associations as defined in Section 3(b) of the
                Federal Deposit Insurance Act (12 U.S.C. 1813);

        (i) |_| A church plan that is excluded from the definition of an
                investment company under section 3(c)(14) of the Investment
                Company Act of 1940 (15 U.S.C. 80a-3);

        (j) |X| Group, in accordance with ss. 240.13d-1(b)(1)(ii)(J).

        If this statement is filed pursuant to Rule 13d-1(c),
        check this box. |_|

Item 4. Ownership

    (a) Amount beneficially owned:
        2740041

    (b) Percent of class:
        11.38%

    (c) Number of shares as to which such person has:
        (i)   Sole power to direct the vote
              101553

        (ii)  Shared power to direct the vote
              1776772

        (iii) Sole power to dispose or direct the disposition of
              0

        (iv)  Shared power to dispose or direct the disposition of
              2740041

Item 5. Ownership of 5 Percent or Less of a Class.

        If this statement is being filed to report the fact that as of the date
        hereof the reporting person has ceased to be the  beneficial owner of
        more than 5 percent of the class of  securities, check the following |_|

Item 6. Ownership of More than 5 Percent on Behalf of Another Person.

        Neuberger Berman, LLC is deemed to be a beneficial owner for purpose of
        Rule 13(d) since it has shared power to make decisions whether to retain
        or dispose of, and in some cases the sole power to vote the securities
        of many unrelated clients.  Neuberger Berman, LLC does not, however,
        have any economic interest in the securities of those clients. The
        clients are the actual owners of the securities and have the sole right
        to receive and the power to direct the receipt of dividends from or
        proceeds from the sale of such securities.


        With regard to the shares set forth under Item 4.(c)(II), 1,472,000
        shares or 6.85% of the outstanding are beneficially owned by Neuberger
        Berman Genesis Fund Portfolio, a series of Neuberger Berman Equity
        Funds.  Neuberger Berman, LLC and Neuberger Berman Management Inc. are
        deemed to be beneficial owners of these shares for purposes of Rule
        13(d) since they both have shared power to make decisions whether to
        retain or dispose of the securities.  Neuberger Berman, LLC and
        Neuberger Berman Management Inc. serve as sub-adviser and investment
        manager, respectively, of Neuberger Berman Genesis Fund Portfolio, which
        holds such shares in the ordinary course of its business and not with
        the purpose nor with the effect of changing or influencing the control
        of the issuer.

        With regard to the balance of the shares set forth under Item 4.(c)(II),
        Neuberger Berman, LLC and Neuberger Berman Management Inc. are deemed to
        be the beneficial owners for the purposes of Rule 13(d), since they have
        power to make decisions whether to retain or dispose of securities held
        by Neuberger Berman's various other Funds.  Neuberger Berman, LLC is the
        sub-advisor to the aforementioned Funds.

        No other Neuberger Berman, LLC advisory client has an interest of more
        than 5% of the issuer.

        It should be further noted that the share calculation under item
        4.(c)(IV) is derived from a total combination of the shares set forth
        under Item 4.(c)(I and II). The remaining balance of shares, if any, are
        for individual client accounts over which Neuberger Berman, LLC has
        shared power to dispose.


Item 7. Identification and Classification of the Subsidiary Which Acquired the
        Security Being Reported on by the Parent Holding Company or Control
        Person.

        Neuberger Berman Inc. makes this filing pursuant to the Rule 13d-1 (b)
        (ii) (G) since it owns 100% of both Neuberger Berman, LLC and Neuberger
        Berman Management Inc. and does not own over 1% of the issuer.
        Neuberger Berman, LLC, as investment advisor and broker/dealer with
        discretion.  Neuberger Berman Management Inc. as investment advisor to a
        series of Public Mutual Funds.


Item 8. Identification and Classification of Members of the Group.

        N/A

Item 9. Notice of Dissolution of Group.

        N/A

Item 10. Certifications

         By signing below I certify that, to the best of my knowledge and
         belief, the securities referred to above were acquired and are held in
         the ordinary course of business and were not acquired and are not held
         for the purpose of or with the effect of changing or influencing the
         control of the issuer of the securities and were not acquired and are
         not held in connection with or as a participant in any transaction
         having that purpose or effect.

Page 6 of 7 Pages


After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

                                      Neuberger Berman Inc.

Date: 02/17/2006                      /s/ Kevin Handwerker
                                      Name:  Kevin Handwerker
                                      Title: Chief Administrative Officer
                                             and General Counsel


                                      Neuberger Berman, LLC

Date: 02/17/2006                      /s/ Kevin Handwerker
                                      Name:  Kevin Handwerker
                                      Title: Chief Administrative Officer
                                             and General Counsel


                                      Neuberger Berman Management Inc.

Date: 02/17/2006                      /s/ Peter Sundman
                                      Name:  Peter Sundman
                                      Title: President and Director


                                      Neuberger Berman Equity Funds

Date: 02/17/2006                      /s/ Peter Sundman
                                      Name:  Peter Sundman
                                      Title: Chairman of the Board, CEO
                                             and Trustee


The original statement shall be signed by each person on whose behalf the
statement is filed or his authorized representative. If the statement is signed
on behalf of a person by his authorized representative other than an executive
officer or general partner of the filing person, evidence of the
representative's authority to sign on behalf of such person shall be filed with
the statement, Provided, however, That a power of attorney for this purpose
which is already on file with the Commission may be incor porated by reference.
The name and any title of each person who signs the statement shall be typed or
printed beneath his signature.

ATTENTION: Intentional misstatements or omissions of fact constitute Federal
criminal violations (see 18 U.S.C. 1001). (Secs. 3(b), 13(d)(1), 13(d)(2),
13(d)(5),  13(d)(6), 13(g)(1), 13(g)(2), 13(g)(5), 23, 48 Stat. 882, 894, 901;
sec. 203(a),  49 Stat. 704; sec. 8, 49 Stat. 1379; sec. 10, 78 Stat. 88a; sec.
2, 82 Stat. 454;  secs. 1, 2, 84 Stat. 1497; secs. 3, 10, 18, 89 Stat. 97, 119,
155; secs. 202, 203,  91 Stat. 1494, 1498, 1499; (15 U.S.C. 78c(b), 78m(d)(1),
78m(d)(2), 78m(d)(5),  78m(d)(6), 78m(g)(1), 78m(g)(2), 78m(g)(5), 78w)) [43 FR
18499, Apr. 28, 1978,  as amended at 43 FR 55756, Nov. 29, 1978; 44 FR 2148,
Jan. 9, 1979; 44 FR 11751,  Mar. 2, 1979; 61 FR 49959, Sept. 24, 1996; 62 FR
35340, July 1, 1997; 63 FR 2867,  Jan. 16, 1998; 63 FR 15287, Mar. 31, 1998]

Page 7 of 7 Pages