Use the link below to access your TAC account.
Most teacher user names are of the form 3509FirstInitialLastName.  
Teacher Bill Smith would be 3509bsmith.

https://eschool40.esp.k12.ar.us/TAC40

TAC Complete Training Guide

DIS has a self-management program set up that will allow you to change/reset your password yourself.  Click on the link below, then click on FORGOT PASSWORD.  Enter your username (ex: 3509bsmith) and click to have the system send you a password reset email.  Check your email and follow the directions given.
https://goo.gl/XggyKa

A new User's Guide with tips for password reset can be found here:
SSO User's Guide

You can access TAC/eSchool from home by setting up a VPN connection on your home computer.  The link to the instructions are below.  WCSD Technology does not support personal computers/devices.  If you run into problems or need assistance, call the APSCN Helpdesk at 1-800-435-7989.  If you call the APSCN Helpdesk, please ask for APSCN LAN support and be at your computer.
VPN Instructions