The Chromebook that my daughter uses at school has all of the letters appearing as capitalized letters on the keyboard. For example, the letter a appears as "A" and the letter q appears as "Q." That is accomplished through the use of a Chromebook keyboard overlay. The Chromebook that we have at home doesn't have an overlay and therefore the keys appear in all lowercase letters.
The trouble with a keyboard that appears in all lowercase letters is that the letters "a" and "q" don't appear to a Kindergarten student in the same way that they do when handwritten. I only noticed this last week when my daughter wanted to practice typing her full name which includes the letters a and q. She initially struggled because she couldn't find the a and q keys until I showed them to her. At which point she argued with me that "a" wasn't "written the right way."
My daughter now recognizes all "a" as an a on the keyboard, but it wasn't without a bit of struggle.