Supplemental Educational Services (SES) Title I, Section 1116 (e) of the Elementary and Secondary Education Act Supplemental educational services (SES) are additional academic instruction, offered in addition to school-day instruction, designed to increase the academic achievement of students in schools in the second year of improvement, corrective action or restructuring. Eligible students are all students from low-income families who attend Title I schools that are in their second year of school improvement, corrective action or restructuring