Questions like these show off AI? Several of them are nothing more than location based reminders, which you could do on Android before iOS.
Several of them are calendar events. I don't have an Android powered device right now, but I bet the SGS3 is capable of answering those questions for you. As well as checking an email from a specific person, and sending a text to a specific person.
The only thing I didn't cover, was your question "is my son still at school". So I asked Siri. "What is your child's name?" Me: "Adam" (I don't have a son, so I just picked someone). Siri: Which Adam? Me: Adam xxxx. Siri: Sorry, Timothy, I can't add the relationship for this account. I don't have an address for Adam xxxx. Me: Add an address. Siri. If you like I can search the web for 'Add an address'.
Pretty impressive AI, right? She followed along the conversation perfectly, right? That's a freaking joke.
And still not sure how you would even get to the point where Siri could answer that question anyway. I guess maybe just have the times your son is in school on your calendar. But then that's not really dynamic...she's just checking your calendar. Something just hit me, it could be that your son also has an iPhone, and she pings Find my Friends to see where your sons iPhone is. Something like this is probably possible on Android using Latitude, but I don't know for sure.
*Gave it a test, and yeah, that did work with Find My Friends. So one thing it has. And it may be something that can be accomplished with Android...maybe someone can confirm that.