For example, standardized test scores often lag behind other developed nations, and there are significant achievement gaps based on socioeconomic status, race, and geographic location. Funding disparities between wealthier and poorer school districts are a major contributor to this inequality. Teacher shortages and relatively low teacher salaries are also significant problems, impacting class sizes and the quality of instruction.
However, it's not all negative. The US also boasts some of the world's top universities and research institutions. Many schools offer innovative programs and dedicated educators strive to provide high-quality learning experiences. Plus, "terribly" is subjective; some might find the system acceptable, while others might consider it inadequate even when considering the strengths.
Instead of using broad strokes like "terrible," it's more helpful to look at specific aspects – funding, teacher training, curriculum development, standardized testing, etc. – and analyze the data and different perspectives to gain a more nuanced understanding.