It depends on which mainstreaming you are referring to.
Mainstreaming can simply mean - to bring into the mainstream.
When it comes to education, here is what mainstreaming is: <span>the practice of educating students with </span>special needs<span> in regular classes during specific time periods based on their skills.
There's also a thing called gender mainstreaming, which is a strategy for promoting gender equality. </span>
If you are looking for a spell correction here it is
Why does Mr.Darcy not dance at the ball ?
<span>Demodocus for his gift of song. </span>
A Biblical allusion is using an expression from the bible, but not directly quoting from it.
hope this helps