A prank in which seniors at West Texarkana High arrived for first-period classes with their shirts and pants on backward has somehow resulted in a $50,000 increase in funding for the school's math program, bewildered administrators announced today. 'We'd like to thank the state superintendent, I guess, and also the fine folks at Texas Instruments for all those brand-new graphing calculators,' vice principal Ed Guerrero said during his morning announcements. 'I'd send everyone home and make them change, but maybe we should wait and see whether our computer lab gets remodeled first.' The incident comes on the heels of last year's district championship by the debate team, after which the school's football program mysteriously had its entire budget cut. 