Students who pass through a rigorous curriculum in high school can immediately enter a dual enrolment program in colleges (Ravitch 355). These students leave school much further along. This reduces cost as well as time for a post-secondary degree. Students may not be ready for college unless they take additional courses from the traditional core. The content and quality of the core courses need to be improved through additional courses that students take, and this reflects how rigor the curriculum is. The courses enable all students to have equal opportunities to be prepared for post-secondary education. Many students who take the core curriculum are unprepared for college and work challenges.Positive outcomes can be achieved through rigorous courses as qualified and professional teachers are recruited to teach. Thus, the schools are able to assign teachers to courses that they can handle best. The content of the rigorous curriculum can be taught and learned effectively. Students in rigorous schools improve their ACT test scores in mathematics. Most students do not take the right number and kind of courses they need to be ready for college and work. The requirements for graduation must be aligned with readiness expectations of college and work. These courses cover what students ought to know and are capable of doing in their high school courses in specific subject areas. As such, students can have the solid foundation to begin next courses.