How much do freshman grades matter for Harvard?

Currently doing well in school, getting all-A’s as a senior with challenging coursework (4 APs). I have gotten all-A’s throughout high school, except for Freshman year, where I got one B 1st semester and 2 Bs 2nd semester. Will this decrease my chances of getting into Harvard?

No. The simple act of hitting the submit button will decrease your chances.

While grades are important, they are only one piece of the application package.