We do not yet know whether MathILy-EST will run in 2026. This page will be updated when we receive a funding decision from the NSF.
Application materials must be received by... That includes the letters of recommendation---speaking of which, a few words of advice. REUs of all kinds expect field-specific commentary on research readiness from recommenders, so the best advocates for a MathILy-EST applicant will be instructors who have done (or continue to do!) mathematics research themselves. College faculty are more likely than high-school teachers to have the requisite experience, with instructors at summer intensives likely somewhere in the middle.