A relatively small subset (perhaps a few hundred) of high school debaters, mostly from elite public and private schools, travel around the country to tournaments on the "national circuit". The current nine largest and most prestigious/competitive national circuit tournaments are (in no particular order) the Glenbrooks, held at Glenbrook North and Glenbrook South High Schools in the Chicago suburbs; the New York City Invitational at the Bronx High School of Science; the Harvard Invitational at Harvard University in Boston, Mass; the California Invitational at UC Berkeley, the Greenhill Fall Classic hosted by Greenhill School in Addison, Texas; the Heart of Texas Invitational at St. Mark's School in Dallas, Texas; The Harvard-Westlake Tournament (formerly VBT), held at UCLA in Los Angeles; the Mid-America Cup at Valley High School in West Des Moines, Iowa; and the Minneapple at Apple Valley High School in Minnesota. There are a few other prestigious national tournaments that cap the number of debaters from each school and total number of schools allowed to enter to preserve competitive integrity, and because there might simply be not enough space available. National circuit tournaments are very large events that typically draw 120-200 varsity LD competitors, in addition to LDers in the novice and jv divisions, policy debaters, public forum debaters, speech participants, judges, coaches, etc. Some of the biggest attract near a thousand total participants. Regionally significant tournaments often also draw over a hundred participants. National circuit debate is generally characterized by its extremely fast manner of speaking (300 wpm is not considered an uncommon speed to read a case at), use of jargon, and emphasis on strength/depth of argumentation rather than rhetoric. However, some debaters have been successful on the national circuit without conforming to these conventions. The national circuit is mostly composed of traditional "power schools" with historically strong programs (e.g. Valley High School in Iowa, Scarsdale High School in New York, Greenhill School in Texas, or Walt Whitman High School in Maryland). The national circuit and its accompanying style of debate are sometimes criticized for being exclusionary. In particular, critics argue that national circuit "power" programs encourage jargon and esoteric norms not as a means of improving discourse, but as a means of deterring competition from the uninitiated.