The Jackson Memorial High School class of 1981 will celebrate its 25th reunion on Oct. 14 from 7 p.m. to midnight, at Sheraton, Eatontown. The cost is $70 per person if reserved by July 1 and $75 per person after July 1. The evening will include complimentary cocktail hour, buffet dinner, cash bar, DJ music, entertainment, prizes and more. Make checks payable to Carole Everett, JMHS Class of '81 Reunion, P.O. Box 824, Pasadena, Md. 21123. Rooms may reserved at the Sheraton at a discounted group rate. Phone (732) 542-6500 and mention the reunion.