So your double natting to this pfsense box 192.168.1.1 which is in front of your pfsense box that also nats. Does that pfsense have a public on its wan?
You mention your at school - is this the schools network? Or do you have your own private internet connection. Many schools lock down their networks, where they don't even want you running nat that would allow you to put non registered devices on their network. It would be quite possible that they are blocking protocol 41 which is required for a HE tunnel.
From the HE faq
*Two important notes:
Your IPv4 endpoint address must be reachable via ICMP ECHO_REQUEST (Internet Control Message Protocol).
If you are using a NAT (Network Address Translation) appliance, please make sure it allows and forwards IP protocol 41.
What is IP Protocol 41?
IP Protocol 41 is one of the Internet Protocol numbers. Within the IPv4 header, the IPv4 Protocol field is set to 41 to indicate an encapsulated IPv6 packet.
Even if they do allow it.. Not sure it would work through a double nat? Do you have access to this pfsense in front of yours - is it allowing protocol 41? Is it sending it to your 2nd pfsense wan IP? See attached.
protocol41.png
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