Most advice about contacting parents is about doing it more often. Less of it is about how. But the channel you pick shapes the message more than the wording does. The same three facts land very differently as a text at 4pm than as an email that turns up two days later between a fundraiser flyer and a password reset.
Neither channel is better. They do different jobs. A text is a tap on the shoulder. An email is a letter. The trouble starts when a tap on the shoulder is used to deliver a letter, or a letter is used for something that needed a tap on the shoulder.
This post is about choosing between them. If you're after the legal question, there's a separate post on whether CASL applies when teachers text parents. If your problem is that the whole round of outreach takes too long, that's covered in contacting parents about missing work in minutes, not an hour.
What each channel is good at
Texts: short, timely, hard to miss
A text is read where the parent already is: on their phone, between other things. That's its strength and its limit. It's well suited to a single fact and a single ask, things like "Maya hasn't handed in the lab report that was due Friday. Could she submit it by Wednesday?" It's poorly suited to anything that needs a paragraph, an attachment, or a careful explanation.
In my experience texts also tend to get seen sooner than email, especially by families who don't check a school inbox often. I won't put a number on that, because it varies a lot by community and by family. But most teachers who've used both will recognise the pattern.
Email: room to explain, and a record both sides keep
Email gives you space. You can list several items, explain what the work was, say what support is on offer, and point to where the marks live. It reads as more formal, which is right for some conversations and too heavy for others. It also leaves a written record that the parent can forward to a co-parent, search for later, and reply to properly.
The cost is that email is easy to miss. Parent inboxes are full, school messages sometimes land in spam, and some families don't have a reliable email address at all.
Six questions that settle it
1. How long is the message, really?
If you can't say it in two or three short sentences, it isn't a text. Cutting a detailed message down to fit usually removes the context that made it fair, and the parent is left with a bare "your child is behind" and nothing to act on. Write the email. If it matters that the parent sees it today, send a short text as well, saying an email is on its way.
2. How soon does it matter?
Something due tomorrow, a quiz that closes tonight, or a reminder that only helps if it's seen today all favour a text. A mid-term summary, a pattern you've noticed over a few weeks, or an invitation to meet can wait for email and are better for it.
3. Is anything in it sensitive?
This is the question that matters most, and the rule is simple: keep grades, behaviour, wellbeing and anything diagnostic out of texts. Phones are shared, lock screens show previews, and a text can be read by whoever is holding the device, sometimes the student. "Ali has two assignments outstanding in science" is fine. A percentage, a comment about conduct, or anything to do with support needs belongs in an email or a phone call, or in person.
A useful test: would you be comfortable if this message appeared on the lock screen of a phone sitting on the family's kitchen table? If not, it's not a text.
4. What tone do you need?
Texts read as casual and immediate. That's ideal for good news ("Jordan's presentation today was excellent") and for small nudges. It's wrong for anything that could feel like an accusation, because a short text has no room for the softening a hard message needs. If the parent is likely to be upset, choose a channel where you can say more, or one where you can hear them.
5. Will you need to point back to it later?
If this message is likely to come up again, at an interview, in a conversation with administration, or when a parent says "no one told us", you want a clear written record. Email gives the parent a copy too. Whichever you use, log it somewhere you'll be able to find it in February. The parent-teacher interview prep post covers why that history matters when the meeting comes round.
6. Who is actually on the other end?
Some families have no working email, or one that nobody checks. Some share a single phone. Some read English comfortably in person but find a long school email hard going. For those families a short, plain text is often the most respectful option. Simple words translate better, whether a family member is reading it to them or they're using a translation app on their phone. Avoid idioms, abbreviations and school jargon ("the summative is in the dropbox"). Where your school offers translation or interpretation support, use it for anything longer or more serious.
The point is to ask what works for this family, not what works for you. A quick question at the start of the year, "what's the best way to reach you?", answers most of this before it comes up.
A simple decision guide
| Situation | Use |
|---|---|
| One missing item, deadline soon | Text |
| Several items, or a pattern over weeks | |
| Good news, a quick win | Text |
| Grades, behaviour, wellbeing, support needs | Email, a call, or in person |
| You need the parent to reply or ask questions | Email or a call |
| Family has no reliable email | Short, plain text |
| Long message that also needs to be seen today | Email, plus a short text pointing to it |
Timing and frequency
Send texts at times you'd be comfortable phoning: during the day or early evening, not late at night, and not first thing on a weekend. A text arrives with a buzz and asks for attention right away, so the hour matters more than it does for email. Email can be written whenever you have time, though many mail apps let you schedule it for a reasonable hour.
Frequency matters as much as timing. If every message a family gets from you is about a problem, they'll start to dread your name on their screen. Mixing in the occasional positive note, especially by text where it costs the parent nothing to read, keeps the channel open for the harder messages later.
Consent and opt-outs
Whatever the law says in your jurisdiction, the good practice is the same: tell families at the start of the year how you'll contact them, say who you are in every message, keep it to schoolwork, and stop immediately if someone asks you to. The CASL post goes into the Canadian side in more detail. It isn't legal advice, and neither is this. If you're unsure, your school's privacy officer is the person to ask.
One practical point that's easy to miss: if you text from your personal phone, your number ends up in every family's contacts, and replies come at all hours. That's a reason many teachers use a school system or a dedicated tool for texts and keep the personal phone out of it.
Doing both from one screen with ClassWatcher
ClassWatcher is a Chrome extension for D2L Brightspace, and on the paid plans it lets you text or email a parent or a student from the same list that shows who hasn't submitted. That's the list covered in messaging parents about missing work in Brightspace. You choose the channel per message, so a short reminder can go as a text and a fuller update as an email without switching tools.
A few details that bear directly on choosing a channel:
- Cost. Messages use credits: 1 text is 1 credit, and 1 email is 0.2 credits. Basic (CA$8/month) includes 50 credits a month; Pro (CA$19/month) includes 200.
- Texting is one-way. Texts go out from a shared ClassWatcher number, not your phone. Replies aren't forwarded to you. A parent who texts back gets an automatic note saying the number isn't monitored. That makes texts right for telling a family something, and email or a phone call right for a conversation.
- Email replies reach you. Emails are sent with your own address as the reply-to, so a parent who replies lands in your inbox.
- Opt-outs are honoured. A parent who replies STOP to a text is opted out of further texts.
- Where each works. Texting works for North American phone numbers only. Email works anywhere.
- Keeping texts short. The Shorten button trims a drafted text so it fits in one message. It's a simple rule-based rewrite that runs in your browser, not AI, and nothing is sent anywhere to do it.
- A record either way. Texts, emails and notes you log go into one contact history per student, so you can see what was said and when, whichever channel you used.
Seeing who hasn't submitted is free, with no account. Messaging is part of the paid plans. Setup details are in the getting-started guide, and common questions about credits and texting are answered on the support page.
The short version
Text when it's short, timely and safe to read on a lock screen. Email when it needs explaining, includes anything sensitive, or needs a reply. Call when it might upset someone. And whichever you choose, write it so the parent knows exactly who you are, what's needed, and by when.