between
School B showed falls with these same problem areas by between 1% to 5%.

Can i use "to" with "between" instead of "and"?
There are many figures 1% 1.5% 3.5% 5% in between those two (1%, 5%)

Should i use "and"? Or both "and" and "to" work?

Question

between
School B showed falls with these same problem areas by between 1% to 5%.

Can i use "to" with "between" instead of "and"?
There are many figures 1% 1.5% 3.5% 5% in between those two (1%, 5%)

Should i use "and"? Or both "and" and "to" work?

Answer

'.. falls OF between.. and ....'

Answer

Here's your correct answer.
There are many figures such as 1% 1.5% 3.5% 5% between 1% and 5%.

Answer

'and' is more natural than 'to'. The range is covered by 'between'.
But the rest of the sentence is not very natural either. Did you write it yourself?