Hook is correct. RIT growth projections are based off of Fall scores and vary based on subject area and starting score. This might help explain RIT growth: NWEA Growth as Measure
If your child has already met the projection by Winter, the projection won't adjust. My first grader met her projection for reading by winter testing in kinder and first grade, but her math scores were basically flat from Fall to Spring last year and Fall to Winter this year because no new material was introduced. Between Spring of Kinder and Fall of First she gained 20 points from things she selected to work on over the summer. Theoretically our district uses the RIT projection to show gains which prove teacher efficacy.

Our district won't use NWEA MAP scores for gifted identification. I would check with your district to see exactly what type of testing they will accept and push to get those tests done.