The Mars School Board Tuesday night:

• Heard district solicitor Tom King announce that Seven Fields resident Mark Winters has been appointed by the state Labor Relations Board as the fact finder for the district and its 200 teachers. The teachers’ contract expires on June 30. Fact finding dates have not yet been announced.

• Announced that next month’s meetings have been moved to May 8 and 15. The meetings will be at 7 p.m. in the meeting room at the administration office adjacent to the Primary Center.

• Heard John Hays of Thomas and Williamson report that six unforeseen projects were necessary at the Centennial School, where a $4.2 million, two-story addition is wrapping up. Total cost for the six projects is $54,000. Hays said even with the additional costs, $471,000 remains in the project’s contingency fund. One large additional project involved enlarging a retention pond for $25,000. Another relocated a main water line at $23,000.

• Approved allowing substitute teacher Jody Gibbs, who is also a graduate student, to survey 20 students in the middle and high schools regarding her thesis on homework motivation. Gibbs was told she must get written permission from parents before beginning the surveys in the schools’ study halls.

• Heard superintendent William Pettigrew report that an incorrect grade of flooring was installed two years ago in the administration office adjacent to the Primary Center. Pettigrew said he negotiated a deal in which the contractor, Flooring Services of Imperial, Pa., will install the rubber tile in certain areas where it has worn. Cost will be about $3,000.