Random thought for an addition. Harriet was an entrepreneur before coming to St Louise's and I am sure she misses making money. An enterprising young woman could surely find a role that needs to be filled and turn a tidy profit that way, even if she is effectively held hostage in a boarding school at the time. Unfortunately for her, due to the changes in the law, she has no adult rights, including ownership of businesses.
Enter the Headmaster.
In a new story arc, after you get the Horniness stat to 20 or so, Harriet comes to see our MC in his office about an investment opportunity. She wants to run a business again, but it cannot legally be in her name. She offers a contract to the Headmaster, (She wrote it herself, having studied hundreds of contracts her legal team prepared before coming to the school) which will use his name to purchase certain desirable items from discrete retailers, which she will then sell at the school, (possibly around town, but likely "off camera" if that is the case) and he will get a cut of the profits.
"What kind of goods?" you ask? Well, Harriet has noticed that the girls seem to be thinking of sex with more and more regularity, and many of them seem to be frustrated more than usual. To make matters worse, the local town has no store that sells sex toys for the girls to offer themselves release. Ordering such products online can be terribly expensive and when you do find a deal, quality can be a concern. With a few emails sent via your name to some of her connections, Harriet believes she can order some high quality lewd materials in bulk, and offer every girl at St Louise's all the toys they can fit into any given orifice, while turning a decent profit. Such bulk orders may come with a hefty amount of BDSM leatherwear and latex but she thinks she may even be able to move fetish clothing items to a few girls who want to look sexy without losing money.
After sufficient money is made, Harriet may look into creating a logistics chain to supply goods to buyers who make purchases from an e-store she could set up, but that can come later.
Peeping scenes in each of the girl's rooms that contain generic conversations come up less often, as now the girls have sex toys that they use to take the edge off of their schooling. Ms. Potts begins buying a great variety of BDSM wear to add to her wardrobe, bringing her punishments from the HM for wasting money, but those punishments are made more enjoyable with a new pair of arseless chaps. Priti doesn't want to buy a sex toy at first, so the headmaster buys one for her, after making her sample several while he observes. (He is concerned about her repressed view of sex.) The twins purchase identical dildos, and the only way they can tell them apart is the flavor. (One has a strawberry taste, one has a cherry taste, when they are cleaned) Amy gets a great deal on a St Andrew's Cross and a flogger, all she need now is someone to tie her up and take the flogger to her backside. Debbie loves playing with herstrap-on, but oddly, sometimes she practices giving it head. Liz likes wearing her new cupless babydoll and nothing else, even when around her friends. Donna is appalled at the material, but she does note that the quality is really excellent, and wonders if some big designers might make these outfits on the side, as they are quite stylish.
The other upside to this story arc is that you would get a passive income boost weekly based on how high the horniness stat gets.