No, it’s not filed as a class action and she’s not seeking damages on behalf of others. She’s including the reports of the other women to show a pattern of behavior, to set the tone for her claims. She won’t have to prove that the others were raped, only that they reported the actions to officials at the school so the school had notice of violations and did nothing.
Class actions are usually for situation where all the people with claims can’t be easily identified, not just because there are many plaintiffs. Class action could be used if all plaintiffs can’t be easily identified or if it is unknown if they have a claim. I was in a class of people who had stayed in a hotel in a chain that charged a resort fee. The law firm running the class action didn’t know if I’d paid the resort fee or not, just that I’d stayed in the hotel.(and I got $16 back!) Here, the women can be easily identified, so even if there are 30 or 60 individuals, they can be named as individual plaintiffs if they want to join the case.