Silicon Valley courts brand-name teachers, raising ethics issues

Corporate courtship of these teachers brings with it profound new conflict-of-interest issues

One of the tech-savviest teachers in the United States teaches third grade here at Mapleton Elementary, a public school with about 100 students in the sparsely populated plains west of Fargo.

Her name is Kayla Delzer. Her third graders adore her. She teaches them to post daily on the class Twitter and Instagram accounts she set up. She remodeled her classroom based on Starbucks. And she uses apps like Seesaw, a student portfolio platform where teachers and parents may view and comment on a child’s schoolwork.

Ms. Delzer also has a second calling. She is a schoolteacher with her own