Synopsis As Introduced Amends the Illinois Income Tax Act. Allows an income tax credit for each individual taxpayer who is a teacher, instructor, counselor, principal, or aide who worked in a school in Illinois for at least 900 hours during the taxable year. Provides that the amount of the credit is equal to 25% of the eligible classroom expenses made by the taxpayer during the taxable year, but the credit may not exceed $250. Defines "eligible classroom expenses" as the aggregate amount of nonreimbursed classroom expenses made by the taxpayer during the taxable year less $250. Provides that the credit may not be carried forward or back and may not reduce the taxpayer's liability to less than zero. Effective immediately.