Here's my gut reaction - not scientific, and perhaps says a lot about my gut. Sorry I can't remember your DD's grade/age.
Calculus in 1st grade - unusual.
Algebra in 1st grade - unusual.
4th grade in 1st grade - not unusual for gifted kids with some exposure.
2nd grade in 1st grade - there should be 15% of the kids who are ready for this.
If the school uses MAP tests then they will know exactly who needs to learn what in Math. It might be cheaper to just screen some of the brightest ones on an 'end of next year' test and see where they stand.
People don't see it if they aren't looking for it, and many elementary teacher just hate math.
Love and More Love,
Grinity
