I am wondering how others estimate time for classroom delivery when rolling our new systems or processes. Are there any tools or systems being used for estimating training delivery time, or is it completely up to the trainer's judgment?

Welcome to the boards, Femme400.

I think it would help if you provided more information. Here is how I do it, but YMMV.

1) Determine the customer's allotted time. If there is no customer limitation, use your experience to get a rough idea and remember that you should design the length appropriate for the material and the participants, if you want them to learn, that is. [I put this first because most of my clients come to me with a "suggested" or mandated length -- not everyone has that constraint.]
2) Decide what modes of delivery you will use. This depends on the material. For simplification, Say, presentation, discussion and workshops/activities, scenarios, etc.
3) Figure out how much time you will allocate to the desired modes in order to maximize learning.
4) Design the material.

Now, the reason I asked you to elaborate is because maybe you already have pre-designed materials or you are trying to decide how long it will take learners to learn a particular thing. Those are different questions.

Again, welcome, and hopefully we can help you find the answers you need.

Questions like this make me want to cry.

At the risk of opening it up for you to be rude again, would you mind explaining why?

Femme,

In a perfect world, you analyze the audience, you analyze the content, you devise appropriate strategies, you create the learning events, you pilot them, and then you say, "this takes X amount of time to deliver."

In the real world, the business unit typically says, "we need the training to be 2 hours or less." So, then you work within constraints and negotiate with the business. You say, "training will take 8 hours, but a demo could be done in 2." And the business say, "but we want practice and time for them to do hands-on." Then you say, "well, that will take 8 hours." And they say, "but we can only let the agents off the phone for 2 hours." Then you negotiate some more, and come up with alternatives-- they do pre-work through CBTs you develop before coming to class, you develop job aids they can take back with them, management lets agents off the phones in 4 2-hour sessions over several days/weeks. You can also start to negotiate scope-- do they have to know EVERYTHING about the system, or just how to do XYZ? Maybe you can train XYZ in 2 hours with practice and hands-on.

The three constraints on any project are time, money, and quality. Pick 2.

Honestly, no two projects I've ever developed have been the same with regard to how I developed a time estimate, or how I negotiate with the business units.