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Distributed Server ArchitectureWe designed our system to support the Distributed Server Architecture approach (patent pending) as a more efficient alternative to the centralized server approach. The distributed server hosts test content in tiers, drawing from a central server (administrative station) to district- and/or school level servers. During testing, students download test content from the lower-tier server on a local network. This approach offers faster system performance, supports a virtually limitless number of students, and provides service integrity, so schools can administer uninterrupted test sessions even if they lose their Internet connectionsall at a substantially lower per-student cost.
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