I recommend going up grade levels for math if your kid is doing exceptionally well. My parents went up 2 grades for me (I only did it for 3 years), and it worked wonders (Scored 99%+ on EOG/CAT all 12 years of grade school and placed out of 2nd semester calculus for college with a perfect score on the AP exam). None of the textbooks we looked at for same grade were difficult. This was about 15 years ago though so I wouldn’t have a clue as to what type of textbook to use now. I think we used Abeka but I might be wrong.
I recommend going up grade levels for math if your kid is doing exceptionally well. My parents went up 2 grades for me (I only did it for 3 years), and it worked wonders (Scored 99%+ on EOG/CAT all 12 years of grade school and placed out of 2nd semester calculus for college with a perfect score on the AP exam). None of the textbooks we looked at for same grade were difficult. This was about 15 years ago though so I wouldn’t have a clue as to what type of textbook to use now. I think we used Abeka but I might be wrong.
Her school uses Saxon ... what I might do is get the homeschool version a grade up and challenge her in that way. IN the summer I supplement and I am familiar with Abeka - another good vendor!
Thanks for the advice.