Then, in December, Stanford researchers with the National Student Support Accelerator released an academic paper with more details about the heralded boost to attendance in Washington. Lee and her research team analyzed tutoring schedules for more than 4,000 of the students and calculated that a student was 7 percent less likely to be absent from school on a day when tutoring was on the schedule, compared with a day when tutoring was not on the schedule. The researchers thought that perhaps students felt like they were learning in these sessions, or enjoyed the personal attention, and looked forward to them.