Waubonsee offers free instruction in math, vocabulary, reading comprehension and writing skills to help adults prepare to earn a State of Illinois High School Diploma. Individuals must be 16 years of age or older and meet certain requirements to be eligible to enroll. We offer in-person classes at the Aurora Downtown and Plano campuses, as well as online. Our classes are available in the morning and evening. Additionally, we offer instruction in both English and Spanish. Classes begin in August, September, October, January, February and March.