Education for All wishes to initiate a discussion about categories of diversity. We present you the text of Professor Manfred Pretis, PhD (2014) on this topic.
If we imagine a kindergarten with 5 groups of 20 children each (see Baierl & Kaindl, 2011), that would be 100 children.

• 11 out of every 100 children were born outside of their original context of live and show migration experience or migration background.
• 11 out of every 100 children were born too early or prematurely (Kohlhauser et al., 2000).
• 7 out of every 100 children live in poverty or in poverty-threatening life context.
• 3 out of every 100 children are demonstrating massive language problems.
• 3 out of every 100 children will show in some form significant developmental problems (in sense of disability or threatened disability) regarding the learning, the movement or the sensory perception.
• 3-4 out of every 100 children in our kindergarten will probably have the diagnosis ADHD at the time of the school enrollment.
• 1 child out of the 100 children will be exposed to such massive social risks, so he is at risk of becoming disabled (Trost 1991).
• 4 out of every 100 children in the group are highly talented.

 Sum: ~40% (see also Schlack et al. 2008 in the German KIGGS-Study).
Diversity is not an exception, but rather a rule.