Also I would suggest a Lenovo think pad with touch screen like the 460 Yoga. Make sure you get one with a low screen resolution like 1080
If you go with the Avo other Microsoft surface pro 4 is great because avolites it's written better and scales to the high school resolution. The surface pro 4 (or newer if they have one) will work really well outside as the screen is in excess of 500 nits.
I also have used a Dell Inspiron touch screen with the articulating hinge which is perfect for both. All these computers run around $1000
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