How to force some of the code to be at a different place

Question

I'm writing my lessons on a big LaTeX document so, I've each chapter on a dedicated LaTeX file (which are imported by import command)

However, for some lessons, I want to set a "cotation table" (or other stuff for teacher and not for students) who can't be visible for my students. I don't want to comment and uncomment this table on each .tex files so I prefer a dedicated section on the main LaTeX file I'll comment if I want to see this section or not and ideally, I don't want to change the page order of my document. (so I'm able to point the same page for me or my students).

Taking this into account, is it possible to put in braces the part of a code in the corresponding .tex chapter to make it appear on a dedicated section at the end of my syllabus ? So if the dedicated section is comment in the main files, the part of code on each .tex files will be ignored and if this section is uncomment, these stuffs will be printed at the end.

A MWE will be something like that :

\documentclass[11pt,a4paper]{report}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{lipsum}


\begin{document}
    \chapter{1st chapter}
    \section{My lesson}
        \lipsum[1-2]

        %{start of the teacher part}
    \subsection{Stuff for teacher}
        \label{TeacherStuff}
        \lipsum[1]
        %{end of the teacher part}

    \subsection{My lesson for students continues}
        \lipsum[1]

    \chapter{2nd chapter}
        \lipsum[1]

    \chapter{dedicated chapter for teacher's stuff}
        Where the subsection \ref{TeacherStuff} has to appear.
\end{document}

Thanks for your help !

Answer 1

It's easy with \AtEndDocument{...} from etoolbox package.

To have a teacher/students versions, I've created a boolean \newbool{studentversion}: if you set it to false \setbool{studentversion}{false}, you got the teacher version and vice versa; and two commands: \mypart{...} two write the teacher's parts and \myend{...} to hide the final chapter title in case of student version.

\documentclass[11pt,a4paper]{report}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage{lipsum}
\usepackage{etoolbox}
\newbool{studentversion}
\setbool{studentversion}{false}%true for studtents' version 
\newcommand{\mypart}[1]{\ifbool{studentversion}{}{\AtEndDocument{#1}}}
\newcommand{\myend}[1]{\ifbool{studentversion}{}{#1}}
\begin{document}
    \chapter{1st chapter}
    \section{My lesson}
        \lipsum[1-2]

        %{start of the teacher part}
        \mypart{%
    \subsection{Stuff for teacher}
        \label{TeacherStuff}
        \lipsum[1]
        %{end of the teacher part}
}
    \subsection{My lesson for students continues}
        \lipsum[1]

\mypart{%
    \subsection{Some other stuff for teacher}
        \label{otherTeacherStuff}
        \lipsum[1]
        %{end of the teacher part}
}

    \chapter{2nd chapter}
        \lipsum[1]

\mypart{%
    \subsection{Some other stuff for teacher again}
        \label{otherTeacherStuffagain}
        \lipsum[1]
        %{end of the teacher part}
}
\myend{%
    \chapter{dedicated chapter for teacher's stuff}
        Where the subsection \ref{TeacherStuff} has to appear.
    }
\end{document}