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Technology development is currently experiencing a fairly rapid increase, Therefore at the high school in Karawang intends to hold a grade promotion test using the Computer Based Test (CBT). However, in its implementation there are problems one of which is the server load. This is caused by user requests that exceed the servers capabilities. To overcome these problems, we use web server load balancing using haproxy. But the use of web server load balancing, often experience data inconsistencies per server. Therefore, database replication is also used that can guarantee data consistency in web server load balancing. This research uses descriptive approach with PPDIOO network system design method. There are 2 load balancing algorithms compared, namely round robin and least connection. Based on the httperf test results, throughput parameters of the two algorithms obtain the same average value of 99.5 Kb / second. In testing the response time parameter the least connection algorithm is superior at 6.9 ms compared to round robin which has an average value of 7.2 ms, but in testing the CPU Utilization parameter the round robin algorithm is superior at 23.7% compared to the least connection algorithm at 24.3%.