The projected 15% increase in student starts for Q1 2024 suggests that Lincoln Educational Services is successfully attracting more students, which is a positive indicator of growth and operational efficiency. This growth projection, coupled with the reiteration of the full-year 2024 outlook, signals to investors that the company is on track to meet or exceed its financial and operational targets, potentially leading to an increase in investor confidence and a positive impact on the stock price in the short term.