Since only one gender exists in these schools, the curriculum and style of education are changed to suit the learning style of that specific sex. "Men and women have different learning styles," according to psychology professor ET Higgins, "...you want to encourage girls...while giving boys a reality check; make them understand that they are not as bright as they think they are and challenges them to do better” (ET Higgins). Therese Gnezda, Ph.D., another unique opportunity of single-sex schools is that “the curriculum and courses offered provide advanced work in the areas that children are most interested in and showcase their natural abilities” (Gnezda Suite). To this end, researchers at the University of Cambridge conducted a four-year study to determine which education methods best improved the performance of children from a wide variety of ethnic backgrounds and socio-economic statuses. Results revealed that one of the best strategies for achieving higher levels of performance was using. of single-sex education, stating that "...the single-sex classroom format was remarkably effective in improving boys' performance, particularly in English and foreign languages, as well as improving girls' performance in mathematics and sciences” (NASSPE Single-Sex).