| Top essay sites |
| Top assist sites |
| Server | nginx/1.10.3 (Ubuntu |
| Content-Type | text/html; charset=U |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Vary | Accept-Encoding |
| P3P | CP="IDC DSP COR CURa |
| Expires | Thu, 19 Nov 1981 08: |
| Cache-Control | no-store, no-cache, |
| Pragma | no-cache |
| Strict-Transport-Security | max-age=15768000 |
| Content-Encoding | gzip |