Honestly, I would not allow people to bring their own personal technology because of him or her unable to delete or erase inapropiate things that go up online or the other unstainable problem that parents envy the most: you forgetting your electronics in school.  You need a filtering software to confirm the CIPA regulations.  You also have to create,a acceptable use of policy, and have the software run wirelessly.  And also the take home and bring ins.  I don't know if Kindergarten, 1st, or 2nd grade can handle the resposibility of bringing it every day home to school back and forth, back and forth. Other than that, I have nothing wrong with BYOD.  AS Jim says,"It is time to give up the controls of educational technology."