What is another word for "preparatory"?

Roget's Thesaurus (1911) lists these synonyms for "preparatory": abecedary, academic, academy, advance, aforementioned, aforesaid, alma, ambo, amphitheater, and, antecedence, antecedency, antecedent, anteposition, anterior, anteriority, art, auditorium, ball, before, boarding, book, box, cathedra, chair, class, college, collegiate, come, coming, continuation, convent, creche, cyclopedia, dance, day, denominational, desk, dictionary, educational.