anaplastic, bombastic, drastic, dynastic, ecclesiastic, elastic, enthusiastic, fantastic, gymnastic, iconoclastic, inelastic, monastic, onomastic, plastic, sarcastic, scholastic, spastic, stochastic, thermoplastic, unenthusiastic.
Your query has returned 4320 words, which include anagrams of interscholastic as well as other shorter words that can be made using the letters included in interscholastic.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.