Aight bet. It is not set in stone yet. But i'll give you some pointers from my business knowledge since you have a good cause.Haha, any amount is fine by me
but I’m also not just some future uni student who is doing it to earn extra cash.
I’m passionate about bio and my future career is becoming a teacher, so my uni field would help greatly in tutoring and teaching. Where as, a uni student would be wanting to do something in medicine, but use their bio knowledge to tutor.
The hardest part for you will be finding the first student. Try and find that student. Once you get a student build a strong relationship with him/her. Then offer them a discount for referencing a friend ($5) or something. This will allow you to get more revenue. If you do a good job who knows you may blow up (more and more students).
If your struggling to find your first student joining art of smart one on one tuition (they give $30 for an hour of one to one and they keep $30 - pretty sure). This will allow you to access students. If you feel you've got a strong/loyal set of students you can leave and then take it from there - charge $50 and keep it ($10 cheaper). Just make sure to get the role you do really well in bio - which hopefully you'll do haha.
Who knows you may blow up (depends on your patience and ability to achieve). I know someone who lives in my local area and is a full time tutor lol (doesn't even work). She teaches most of the students in the local school - thanks to references. Ik your wishing to be a teacher but, even you could blow up like that by building a strong student base.
Cheers, good luck.