Complex sentence: Seventh through ninth graders, their extreme math and verbal potential initially identified through the Midwest Academic Talent Search (MATS), attend ATYP's weekly 2.5-hour class.
Split into simpler sentences: Seventh through ninth graders are assessed for their higher level math and verbal potential identified through the Midwest Academic Talent Search (MATS). They attend ATYP's weekly 2.5-hour class.