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Exhibit 31.1 CERTIFICATION PURSUANT TO
RULES 13a-14 AND 15d-14
OF THE SECURITIES EXCHANGE ACT,
AS ADOPTED PURSUANT TO SECTION
302 OF THE SARBANES-OXLEY ACT I, Robert A. Virtue, certify that:  1.
    
    I have reviewed this Quarterly Report on Form 10-Q of Virco Mfg. Corporation;2.
    
    Based on my knowledge, this report does not contain any untrue statement of a material fact
or omit to state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with respect to the period
covered by this report;3.
    
    Based on my knowledge, the financial statements, and other financial information included in
this report, fairly present in all material respects the financial condition, results of
operations and cash flows of the registrant as of, and for, the periods presented in this
report;4.
    
    The registrants other certifying officer(s) and I are responsible for establishing and
maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined
in Exchange Act Rules 13a-15(F) and 15d-15(f)) for the registrant and have:  (a)
    
    Designed such disclosure controls and procedures, or caused
such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the
registrant, including its consolidated subsidiaries, is made known to us by others
within those entities, particularly during the period in which this report is being
prepared;(b)
    
    Designed such internal control over financial reporting, or
caused such internal control over financial reporting to be designed
under our supervision, to provide reasonable
assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally accepted
accounting principles;(c)
    
    Evaluated the effectiveness of the registrants disclosure controls and
procedures and presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this report
based on such evaluation; and(d)
    
    Disclosed in this report any change in the registrants internal control over
financial reporting that occurred during the registrants most recent fiscal quarter
(the registrants fourth fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially affect, the registrants
internal control over financial reporting; and 21




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5.
    
    The registrants other certifying officer(s) and I have disclosed, based on our most recent
evaluation of internal control over financial reporting, to the registrants auditors and the
audit committee of registrants board of directors (or persons performing the equivalent
functions):  (a)
    
    All significant deficiencies and material weaknesses in the design or operation
of internal control over financial reporting which are reasonably
likely to adversely affect the
registrants ability to record, process, summarize and report financial information; and(b)
    
    Any fraud, whether or not material, that involves management or other employees
who have a significant role in the registrants internal control over financial
reporting. Dated: December 10, 2004
    By:
    /s/ Robert A. VirtueRobert A. VirtuePresident 22