I know this may be dumb, but I have three letter of recommendation. One is from my English teacher who taught APLAC and English Composition, and she wrote a wonderful letter. The second is from my speech and film teacher, but those two technically fall under the category of English, at least at my school. The third is from my Forensics coach, who also happens to be an English teacher, but I’ve never had her for an English class.
Is it going to affect me negatively that all three are from the same subject, technically? Do they have any way of knowing? Should I not submit all of them? I was considering not including the one from my Forensics because it is by far the weakest letter.
It may depend on your major and what they ask for. Generally, STEM majors ask for specific teachers IIRC. I do believe that they will take your Forensics letter in context of the Forensics club however.
You really should find a classroom teacher from a subject not English (not a certified teacher from a club or activity) to fulfill the requirement for the second recommendation. This is as important as securing recs from teachers who have had recent contact with you in the classroom (11th or 12), versus a teacher with whom you have had a great experience, but with whom your contact was in 10th grade or before.
As stated above, you need to follow the instructions for submission as detailed by the college to which you are applying. Each application I remember my kids submitting asked that teacher recommendations come from teachers in different subject areas.
Many schools tend to only want three rec letters, one from a GC, and two from teachers, but as noted above it may depend on the school, and your intended major, etc.