Is there an architect in the house?

I previously posted about the inaccessibility of the school I am currently student teaching in. There are simply too many staircases. How does one get rid of that many staircases? My first thought was the school simply needs to relocate or rebuild, but that would cost an absurd amount of money. After a little investigation, I found out that there is an alternate entrance on the adjacent street. 

Here's the entrance the students currently use: 

The students enter on (X) street in order to get to a building on (X-1) street, which really makes no sense. If you enter at the adjacent street, you avoid 4 staircases including the one I originally posted: 

Stair case connecting the two buildings 

Here's the other entrance: 

Now there are only two staircases the students must contend with. The first is outside, and it would be relatively simple to insert a ramp as the staircase is wide. The second (not pictured here) is just through that doorway. It is also wide enough to be fitted with a stairway lift: 

So why don't they already use the alternate entrance? I have no clue. I'll have to ask. Most likely, the school doesn't want to pay for a second security officer to man two entrances. Perhaps a digital security card system can be put into effect. 

Principles of UDL:

1. Equitable Use

2. Flexibility In Use

3. Simple And Intuitive

4. Perceptible Information

5. Tolerance For Error

6. Low Physical Effort

7. Size And Space For Approach And Use

This solution is the simplest and most cost effective compared to rebuilding or relocating. The size of the current stairways indicates that there is enough space for a ramp and stairway lift to be installed alongside the original stairs without causing more barriers. A moderate amount of physical effort will be necessary to use the ramp and/or stairway lift but less so than the original pathway to my classroom.