That being said if you have a special needs kid that needs that as a genuine accommodation... do what you have to do to meet the needs of the kid. Don't do it for anything but that situation in my opinion.
Encourage your kids to get the NoteNames+ app that is available for iOS and Android for free. Brian Wis created a great resource there they can practice note names. Later on it asks more advanced stuff, but if they can make it through the first two levels they'll be on target as beginning students.