In addition to providing more course offerings than Willow High School,
the teachers at Menlo High School are better trained than those at Willow, having received more information on instructing a multilingual and culturally diverse student body.
A) the teachers at Menlo High School are better trained than those at
B) Menlo High School has teachers who are better trained than those at
C) Menlo High School teachers are better trained than they are at
D) the teachers at Menlo High School are better in training than those at
E) Menlo High School has teachers who are better trained than at
I want to understand two points :
1. What is the modifier *having received ......body* modifying. We know that +ing modifiers can modify either subject or subject+verb of preceding clause.
2. At the start of sentence the construction
*to providing * is correct of wrong usage.
Please help !!!

CORRECT SENTENCE:
In addition to providing more course offerings than Willow High School, Menlo High School has
teachers who are better trained than those at Willow, having received more information on instructing a multilingual and culturally diverse student body.
1) it is modifying teachers. ing modifier fr the subject 'teachers'
2)Yes,it is correct usage , here 'to' is a preposition and not part of infinitive 'to provide'
hope this helps