Depend on what kind of education If you are talking about Maths, then sorry to say they dont provide high CPC
I think the search volume per month will not be that high hence leading to lower traffic and fewer clicks
There are plenty of keywords in higher education with high search volume, like 'study abroad program', 'cat exam', 'distance learning' .
Go to google keyword tool and then on the right side of the screen you'll see a drop down that says 'Views' Click on it and click on customize.. and select all. Then type in whatever keyword you want to check the stats for. You'll see what your keyword will be advertised for in the CPC column. You can expect a few cents lower than that in your account if that keyword drove traffic to your site.
maths dosnt have high CPC but higher education have higher CPC or you can try Physics or may be Computer topics like Artificial Intelligence , DSA , Computer network etc
It don't have high CPC but you can get normally more than other niche as move, music, songs, wallpapers and marketing etc.