She explained about how much burden of study students are feeling.
Is this sentence fine? No, it needs to start with a capital letter and end with a full stop.
Should I not use "about" before "explain" always?
Thanks for your help in advance
It's usually best not to use 'about'. 'About' is included in the meaning of 'explain'.
"She explained how much the students were feeling the burden of study."
"She explained how the students were feeling so much burden from study."