I was a private tutor all throughout my undergrad degree (5 years). I taught math & physics to grade 10-11-12 in Lebanon, helped many students better themselves in significantly short periods of time and in both English and French. One student in particular comes to mind, we were able to increase his math grade from 23/100 all the way up to 80/100 in just 1 months of studying which was a great achievement both for me and him.