Does our library need a physical changes? Yes 

Major structural change (this is the dream):
In order to transform our library into a proper learning Commons I can imagine many physical changes that might be beneficial. One barrier to usage in the library is that only one class can use the space of the time. This in a way seems ridiculous because at some times the library is 

empty and at others people are fitting to get in. Adjoining the library is a computer lab and between the library in the computer lab there is an office that is currently not being used, and in the lab itself there's also a lot of empty floor space. In my fantasy world we would take down the wall between the nonfiction section and the computer lab and create some kind of flexible space with movable/ glass partitions, thereby accessing the underutilized space that currently exists. Such a reorganization might even make it possible for two class groups to use the library at a time while preserving the existing computer lab space for a third class. Combining this kind of reconfiguration with an upgrade in the electrical system and WiFi (which is not currently adequate for the school) to enable more students to access digital content on their own devices.
Of course the cost of this would be exorbitant and it is therefore very unlikely that it would ever be possible. I think this sort of change would maximize usage of the physical space in the library. 
Other physical changes:
This is the more achievable suggestions: I also feel that there's some potential to gain extra space if some of the orientation of the shelving changed. The way that the fiction shelving currently sits creates bottlenecks and makes it difficult for traffic to flow in and around the shelves. This can create a safety issue. To do this we would have to remove all the books from the shelves and put in a work order for district personnel to move the shelves (they seem to be heavy items). While this change seems like it would improve traffic flow and would be of benefit, I wouldn't say that it strictly speaking necessary! The nonfiction section could also benefit from a rearrangement of shelves improving traffic flow through the section.

Our library currently has a cozy reading area with sofas adjacent to the fiction section and there's a separate work area with six pairs of trapezoid tables that are good because they are flexible and can be moved into various groupings around the space. This work space is surrounded by nine computer stations. They have been arranged too closely together in a corner so that the students do not have enough space to work without getting in each others way.
The realistically possible changes:
The one change that I feel could be a necessary one is to overhaul the teachers reference section and the A/V section. The teachers reference section contains many items that have never been catalogued. More recent purchases have and as you can see they have a call number that starts TR, they also have a red sticker on the spine. There remain however many older resources which have not been cataloged and are sitting on the shelves or merely floating around the school.

First up would be to catalog those items, in order to make them searchable and to enable inventory tracking. The A/V section contains many ancient VCR tapes which these days do not get used, partly because they are out of date and partly because the schools existing VCRs are breaking and not being replaced. Those titles that may still be appropriate should be replaced with DVDs and the rest should be weeded from the collection. I also feel that having a viewing station available for students to use could allow them to have access to those AV materials within the library itself, if they're not going to be allowed to circulate those materials (as they currently are not). These changes could be made without any extra expenditure (of money- time and effort are another issue). We have some old TVs and VCR/DVD players available that teachers are not using anymore because they are using their laptop computers and projectors instead. Setting up a viewing station in an unused corner is a very reasonable thing. 

These changes are just the first on my list. Others include creating a magazine section near the comfy reading zone, and moving the graphic novels to that area as well. These two items are currently held on the other side of the fiction section next to the quiet working zone. Again requiring time and manpower but not money. Perhaps doable in June? All of these things are on my agenda for the first meeting of the library committee that I am working on persuading the TL to start. I promised to stop hacking into her account and ordering books by accident if she would let me be on the committee.