The Wake County school system has grown by more than 3,100 students compared to the same time last school year.

School officials reported today they had 149,528 students on Monday, up 3,160 students from last year’s enrollment on the 10th day of classes. Schools get teachers based on enrollment so Wake will use Monday’s total — this year’s 10th day of classes — to decide whether to transfer teachers between schools.

Wake will need to pick up 890 more students by Sept. 24 — the 20th day of classes — to reach this year’s official projected enrollment of 150,418 students.

Wake is the 16th-largest school district in the nation and the largest in North Carolina.