Read this today, "Rethinking Giftedness and Gifted Education: A Proposed Direction Forward Based on Psychological Science", which is very germane to this discussion.

Some special schools target a limited number of academic domains, and some focus on more general academic-talent development. The most intensive special schools existed in the Soviet bloc countries. According to Donoghue, Karp, and Vogeli (2000), Chubarikov and Pyryt (1993), and Grigorenko and Clinkenbeard (1994), the impetus for specialized science schools came in the late 1950s from distinguished scientists advocating for educational opportunities to develop future generations of scientists. In order to increase the geographical reach of the schools, several included boarding facilities. Admission to the schools was based on stringent criteria, including having already competed well in regional competitions. The faculty of these schools included pedagogically talented educators (Karp, 2010), and students had the opportunity to work with renowned professors as well. An example of one of these specialized institutions is the residential Kolmogorov School (Chubarikove & Pyryt, 1993), which enrolls 200 students per year from Russia, Belarus, and beyond. Selection was and continues to be based on a record of success in regional Olympiads. Professors from the prestigious Moscow State University serve as the faculty, the coursework is heavy and intense, and students are expected to conduct independent projects on topics of interest to them. Grigorenko and Clinkenbeard (1994) reported that students attending Soviet special schools were uncharacteristically (for the Soviet Union) encouraged to be intellectually aggressive and competitive. They added that the curriculum in these schools shortchanged the humanities and social sciences, focusing overwhelmingly on excellence in mathematics and science. Although the schools were often denigrated by Soviet educators and psychologists, who argued that outstanding achievement was achieved exclusively from hard work and commitment, these arguments were countered by famous scientific advocates (Donoghue et al., 2000). The schools, which continue to exist in some form today, have graduates on the faculties of the most prestigious institutions in Russia. However, many graduates of these schools are also found in the academic ranks of Western universities, leading Russian policy makers to question the value of further investment.

• Donoghue, E. F., Karp, A., & Vogeli, B. R. (2000). Russian schools for the mathematically and scientifically talented: Can the vision survive unchanged? Roeper Review, 22, 121–123. doi:10.1080/02783190009554015
• Chubarikove, V. N., & Pyryt, M. (1993). Educating mathematically gifted pupils at the Komogorov School. Gifted Education International, 9, 110–130
• Grigorenko, E. L., & Clinkenbeard, P. R. (1994). An inside view of gifted education in Russia. Roeper Review, 16, 167–171. doi:10.1080/02783199409553566
• Karp, A. (2010). Teachers of the mathematically gifted tell about themselves and their profession. Roeper Review, 32, 272–280. doi:10.1080/02783193.2010.485306

It also discusses athletics.